php - Notice: Undefined offset: 4 -

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this question has answer here:

i'm working on ticketing system project, there's error on code , i've search on web answer nothing works. error says

notice: undefined offset: 4 in c:\wamp\www\online bus reservation\admin\bussch.php on line 69

here code

$ddaa = mysql_query("select id, route, time bus_sch order id"); echo mysql_error(); while ($data = mysql_fetch_array($ddaa)) { $sold = mysql_fetch_array(mysql_query("select count(*) seat_details busid='".$data[0]."' , status='1'")); $available = $data[4]-$sold[0]; $rname = mysql_fetch_array(mysql_query("select routename bus_route id='".$data[1]."'"));

the line 69 is:

$available = $data[4]-$sold[0];

please help. thank :)

read error message:

undefined offset: 4

and pay attention query:

mysql_query("select id, route, time bus_sch order id");

you have 3 element:

  • 0 id
  • 1 route
  • 2 time

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